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Gene therapy that targets and corrects a defective gene in non-reproductive body cells is called:
AGerm line gene therapy
BSomatic gene therapy
CStem cell therapy
DRecombinant vaccination
Answer & Solution
Correct answer: B. Somatic gene therapy
1. Gene therapy replaces a defective gene by transferring functional genes into a patient.
2. When the correction is made in somatic (non-reproductive) cells it is somatic gene therapy.
3. Germ line gene therapy targets egg and sperm cells, so option A is the contrasting trap; stem cell therapy uses undifferentiated cells, a different approach.
4. Hence the answer is B.
_Source: Samacheer Kalvi (TN SCERT) Class 10 Science, Unit "Breeding and Biotechnology", p.300_
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